1242320342 has 4 divisors (see below), whose sum is σ = 1863480516. Its totient is φ = 621160170.

The previous prime is 1242320341. The next prime is 1242320363. The reversal of 1242320342 is 2430232421.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242320341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310580084 + ... + 310580087.

It is an arithmetic number, because the mean of its divisors is an integer number (465870129).

Almost surely, 2^1242320342 is an apocalyptic number.

1242320342 is a deficient number, since it is larger than the sum of its proper divisors (621160174).

1242320342 is an equidigital number, since it uses as much as digits as its factorization.

1242320342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621160173.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1242320342 is about 35246.5649673837. The cubic root of 1242320342 is about 1075.0067688775.

Adding to 1242320342 its reverse (2430232421), we get a palindrome (3672552763).

The spelling of 1242320342 in words is "one billion, two hundred forty-two million, three hundred twenty thousand, three hundred forty-two".